[Plugin] Relativize path in lockfile
[Plugin] Relativize path in lockfile

Closes #92
orta/cocoapods-keys,colinta/cocoapods-keys,AutoScout24/cocoapods-keys,kazuph/cocoapods-keys,ashfurrow/cocoapods-keys,AutoScout24/cocoapods-keys,ashfurrow/cocoapods-keys,kazuph/cocoapods-keys,colinta/cocoapods-keys,anurlybayev/cocoapods-keys,anurlybayev/cocoapods-keys,orta/cocoapods-keys